[ https://issues.apache.org/jira/browse/SPARK-26769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Marcelo Vanzin updated SPARK-26769: ----------------------------------- Component/s: (was: Spark Core) SQL > partition prunning in inner join > -------------------------------- > > Key: SPARK-26769 > URL: https://issues.apache.org/jira/browse/SPARK-26769 > Project: Spark > Issue Type: Improvement > Components: SQL > Affects Versions: 2.4.0 > Reporter: nhufas > Priority: Major > Labels: PartitionPruner > > When joining a partitioned parquet table with another table by partition > column it should prunne partitions from partitioned table based on another > table values. > example: > tableA parquet table partitioned be part_filter > tableB table with column with partition values > > tableA is partitioned by part_A,part_B,part_C,part_D > tableB is a single column with 2 rows having part_A and part_B as values. > > doing > select * from tableA inner join tableB on > tableA.part_filter=tableB.part_filter > should generate a partition prunning on tableA based on tableB values (in > this case scanning only 2 partitions) but it wll read all 4 partitions from > tableA only filter the results. > > note: this kind of approach works on Hive (filtering tableA partitions) -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org